<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .yeye {
      width: 500px;
      height: 500px;
      background-color: pink;
    }

    .father {
      width: 350px;
      height: 350px;
      background-color: rgb(228, 150, 6);
    }

    .son {
      width: 200px;
      height: 200px;
      background-color: purple;
    }
  </style>
</head>

<body>
  <div class="yeye">
    <div class="father">
      <div class="son">
      </div>
    </div>
  </div>
  <script>
    const yeye = document.querySelector('.yeye')
    const fa = document.querySelector('.father')
    const son = document.querySelector('.son')
    // 福建  龙岩  闽大   望云楼   捕获阶段
    // 望云楼  闽大   龙岩  福建   冒泡阶段
    yeye.addEventListener('click', function () {
      alert('我是爷爷')
      e.stopPropagation()
    })
    fa.addEventListener('click', function () {
      alert('我是爸爸')
      e.stopPropagation()
    })
    son.addEventListener('click', function (e) {
      alert('我是儿子')
      e.stopPropagation()
    })

  </script>
</body>

</html>